Example
A TIE pilot must control TIEs of the same type.
A vehicle pilot must control NPC Vehicles of the same type.
Any NPC automatically follows his "master".”

Presuming all ships are in the above list, of the same type, and at the same location as you, and you are assigned as pilot of all, then you can go to your personal ship inventory, select piloted ships, and make the others (up to 11 others to make a squad of 12) NPC controlled, and they will fly where you fly.